Askar Colour Magic 3nm Narrowband H-Alpha (Ha) Imaging Filter - 2" Mounted

AskarSKU: ASKAR2HA3

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Sale price$545 CAD
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Description

For all astrophotography enthusiasts, filters are one of the indispensable accessories to achieve perfect deep-sky imaging. The dedicated astronomy filters for deep-sky imaging can effectively eliminate the influence from the background light and enhance the contract of your photographs and make the targets displayed more clearly and delicately. Askar’s newly-launched 3nm deep-sky Color Magic narrowband filter is a professional astrophotography tool specifically designed for deep-sky imaging.

Compared with the previous Askar 5nm deep-sky filters, this filter set has a narrower bandwidth. Therefore, even if your are at an area affected by the urban light pollution, night glow and other undesired light, you can capture high-quality deep-sky pictures with the help of Askar 3nm narrowband filters. The narrower bandwidth and efficient light transmission considerably enhance the contrast of your pictures, making it easier to display the details of the stars that otherwise are fairly difficult to spot.

At the same time, the Color Magic 3nm deep-sky narrowband filter has very good halation control, providing more contribution to your astrophotography.

If you want to shoot some nebulae or supernova remnants with H-alpha particles, then the Askar H-alpha (Ha) 3nm filter is definitely an excellent tool.

The Askar H-alpha filter has a center wavelength of 656.3nm, where it has an ultra-high transmittance of over 90%. The highly narrow 3nm bandwidth ensures this filter effectively blocks out light pollution or other distracting lights such as night glow. So, Askar H-alpha is very suitable for using in areas with serious light pollution. Of course, Askar H-alpha can effectively enhance the contrast of images when shooting in some dark places.

Specifications:

  • Name: 3nm H-alpha 2"
  • Male filter thread: M48x0.75
  • FWHM: 3nm
  • CWL:656.3nm
  • Peak transmittance:90%
  • Barrier property:≥OD5 @ 200-1100nm
  • Thickness:1.85 ± 0.05mm
  • Surface finish:60/40
  • Parallelism:30"
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